How to solve ( ) ( ii) If a are perpendicular . Whether following vectors are orthogonal are not ; overline a =2 hat i -3 hat j +2 hat k , vec b =5 hat i +8 hat j +7 hat k; overline a = hat i +3 hat j -4 hat k ,; vec b =-2 hat i + hat j +3 hat k Prove the commutative law of a and and distributive laws of scalar product f the following vectors . a= hat i - hat j +2 hat k ( i) b=2 hat i +3 hat j - hat k , , underline c =5 hat i - hat j +2 hat k ( ii ) a=3 hat i -5 hat j +7 hat k; b=-4 hat i + hat j + hat k , underline c =6 hat i + hat j -2 hat k Find angle between vectors ; + 3

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1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

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